Note that the snapshot summaries of these test results are for released versions of the browsers tested. Versions that are still in development may provide better support for these features. The tests themselves do not test any vendor prefixes.

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The tables show the latest results from the W3C Test Framework. Below the tables are summaries of the results at a given date. The table data may be more up-to-date than the summary. The tables may also contain some incorrectly scored tests, and tests that relate to non-released versions of browsers. These are not included in the summary.

When the html tag sets dir to rtl, (a) directional runs in a table are ordered right-to-left, (b) columns run right-to-left, (c) text is right-aligned within cells, and (d) the table is right-aligned on the page.

When dir="rtl" is added to a table in a ltr context, (a) directional runs in a table are ordered right-to-left, (b) columns run right-to-left, (c) text is right-aligned within cells, and (d) the table is left-aligned on the page.

When dir="rtl" is added to a table in a rtl context, (a) directional runs in a table are ordered left-to-right, (b) columns run left-to-right, (c) text is left-aligned within cells, and (d) the table is right-aligned on the page.

When dir="rtl" is added to a div in a ltr context, for tables in the div (a) directional runs in a table are ordered right-to-left, (b) columns run right-to-left, (c) text is right-aligned within cells, and (d) the table is right-aligned on the page.

When dir="rtl" is added to a div in a rtl context, for tables in the div (a) directional runs in a table are ordered left-to-right, (b) columns run left-to-right, (c) text is left-aligned within cells, and (d) the table is left-aligned on the page.